diff --git a/docs/advanced-features/security-headers.md b/docs/advanced-features/security-headers.md
index db5be67f1ebaa..1fe223855cb70 100644
--- a/docs/advanced-features/security-headers.md
+++ b/docs/advanced-features/security-headers.md
@@ -11,16 +11,18 @@ To improve the security of your application, you can use [`headers`](/docs/api-r
 
 // You can choose which headers to add to the list
 // after learning more below.
-const securityHeaders = [];
-
-async headers() {
-  return [
-    {
-      // Apply these headers to all routes in your application.
-      source: '/(.*)',
-      headers: securityHeaders
-    }
-  ]
+const securityHeaders = []
+
+module.exports = {
+  async headers() {
+    return [
+      {
+        // Apply these headers to all routes in your application.
+        source: '/(.*)',
+        headers: securityHeaders,
+      },
+    ]
+  },
 }
 ```